NYC-WTC_000233682

NYC 9/11 Public Portal Document

response guidelines

6.3.2 Witness Account THRE.XT EVALl'ATION STAGE _______ Possible Credible _____ Confirmatory_____ I • Location of the suspicious • Additional information from the • Results of sample analysis. n activity. witness. • Contaminant information. • Witness account of the • Results of site characterization at • Results of site characterization f suspicious activity. location of suspicious activity. at other investigation sites. o • Additional details from the • Previous security incidents. • Input fioni primacy agency ill threat warning. • Real time water quality data from and public health agency. IB the location of suspicious activity. a • Input from local law enforcement. t i o o • Was there an opportunity for • Do site characterization results • Were unusual contaminants contamination? reveal signs of contamination? detected during analysis? Do • Is the witness reliable? • Is the suspicious activity similar they pose a risk to the public? • Has normal operational to previous security incidents? • Do site characterization results activity been ruled out? • Does other information (e.g., reveal signs of contamination? 1 • Have other “harmless” water quality) corroborate threat? • Is contamination indicated by a causes been ruled out? • Does law enforcement consider “preponderance of evidence?’’ B this a credible tlireat?

IIIi

• Notifications within utility. • Drinking water primacy agency. • Emergency response agencies.

io • Local law enforcement. • State/local public health agency. • FBI. • National Response Center. • Other state and federal assistance providers. t i f

Bi III i III III W

70 Interim Final - August 2004

CITY_21MC100_0 04992409

NYC-WTC_000233752